John Rankin Lock And Dam Reservoir Report
Last Updated: December 5, 2025
John Rankin Lock and Dam, also known as Pool D, is a federal structure located in Itawamba, Mississippi, along the Canal Section of the Tenn-Tom Waterway.
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Summary
Completed in 1984 by the US Army Corps of Engineers, this gravity dam serves primarily for navigation purposes, with additional functions including recreation and other activities. Standing at a structural height of 48 feet and a length of 1600 feet, the dam has a significant hazard potential and a very high risk assessment rating.
Managed by the US Army Corps of Engineers, John Rankin Lock and Dam features a controlled spillway and one lock, with Tainter gates for outlet control. The dam has a storage capacity of 27,000 acre-feet and a normal storage level of 24,900 acre-feet. Regular inspections and maintenance are conducted to ensure the dam's structural integrity and readiness for potential emergencies. USACE actively engages with local emergency managers and the public to raise awareness and preparedness in case of a dam-related incident, highlighting the importance of ongoing risk management measures.
In the face of potential flooding and severe weather events, the US Army Corps of Engineers works diligently to address all types of flood risk associated with John Rankin Lock and Dam. By monitoring its condition, prioritizing risk-reducing activities, and enhancing community preparedness, USACE aims to minimize the impact of emergencies and ensure the proper functioning of this vital water resource infrastructure.
Year Completed |
1984 |
Dam Length |
1600 |
River Or Stream |
CANAL SECTION, TENN-TOM WATERWAY |
Primary Dam Type |
Gravity |
Surface Area |
1992 |
Length Of Locks |
600 |
Hydraulic Height |
45 |
Drainage Area |
379 |
Nid Storage |
27000 |
Structural Height |
48 |
Outlet Gates |
Tainter (radial) - 3 |
Hazard Potential |
Significant |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cummings Creek Nr Fulton
|
43cfs |
Tombigbee River Nr Fulton
|
180cfs |
Twentymile Creek Nr Guntown
|
23cfs |
Red Bud Creek Nr Moores Mill
|
12cfs |
Bull Mountain Creek At Tremont
|
90cfs |
Bear Creek Near Red Bay
|
454cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
John Rankin Lock And Dam